Improvement in crucible-machines



J. 0.:GLIME. Crucible Machine.

No. 208,960., Patented Oct. 15,1878. I

WITNESSES.- W

MMW

- shaft, having secured thereto the driving-pulwheel has noshaft-bearings, but has a circu1n-' construction, combination, andarrangement UNITED STATES PATENT OFFICE.

JOHN c. OLIME, or PniLADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN CRUClBLE-MACHINES.

Specification forming part of Letters Patent No. 208,960, dated October15, 1878 application filed September 13,1878. 1

To all whom it may concern:

Be it known-that I, JOHN C. OLIME, of Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented certain new anduseful Improvements in Machines for Making Plumbago and other Orucibles;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it pertains to make and use it, referen ce being had to theaccompanying drawings, which form a part of this specification, inwhich- Figure l is a longitudinal vertical section; and Figs. 2, 3, and4 are detail views.

My invention has for its object to provide a new and improved machinefor manufacturing plumbago and other crucibles, having relation to thefollowing points First, to the provision of means whereby the pot orcrucible is moved to and from the former second, to the provision ofmeans for imparting a reciprocating motion to the mold-box, so as tocause the same to approach to and recede from the former, while at thesame time said box has a rotary movement around said former; third, tothe provision of a sliding former having fixed bearings, and areciprocating mold-box which has a revolving motion around said former.

My invention accordingly consists of a main frame, supporting theformer, and also a slidin g frame, in which is journaled a vertical leysand mold-box. Said frame is provided with a rack, which is directlyopposite another rack attached to the stationary frame of the machine.Between said racks, and meshing therewith, is placed a gear-wheel,provided with a handle or lever, by means of which said wheel ispartially rotated, thereby moving the pot or crucible to and from theformer. Said ferential bearing on both of said racks, so that itrevolves on and moves along the same as it imparts a reciprocatingmotion to the sliding frame.

My invention further consists in the novel of parts, as hereinafter morefully set forth.

Referring to the accompanying drawing, A is the main frame of themachine, supported 011 legs a a. Said frame is provided with thedovetail guides a a, and has a slot, a in one end, as shown.

B is a rack, secured beneath said frame, and provided on either sidethereof with guides or ways I) b. D is the former, having an up-anddownmovement in the fixed bearings d d in the overhanging arm (1, which issupported by the upright (1 secured, as shown, to the main frame of themachine. 0 is a supplementary sliding frame, provided with dovetailtenons, which fit into the guides to a} on the frame A, and is kept inposition thereby. Said frame is provided with a slot or recess,- 0,which forms a passage-way for the upright (1 E is an inverted-T-shapedbracket, secured to or made a part of said frame 0, the vertical arniEof which passes through an elongated slot,.a in the main frame.

The short horizontal end 0 of the-bracket E forms a bearing for thevertical spindle F, to which is secured the driving-pulleys f f andreceptacle f for the mold-box. The long arm 0 of said bracket E isfurnished with a rack, Gr, on either side of which are ways or guides gg, projecting'a short distance above the teeth of said rack. This rackand the ways are directly below, and correspond in dimensions and shapewith the rack B and its ways b b.

His a gear-wheel, placed-between said racks B and Gr, meshing therein,and held in position thereon by the ways or guides b and g. Said wheelis provided with a shaft, 7:, 011 which is secured a handle or lever, h.It will-be observed that said wheel'H has no shaft-bear ings, but findsits support and has its bearings in said racks on its circumferentialteeth. The

effect of this construction is that a movement of the lever h not onlyturns the wheel H and ing-screw, 7., for limiting the amount ofreciprocation of the frame 0 with the mold-box f toward the former, todetermine the diameter of the crucible."

.The operation is as follows: The diameter of the crucible beingdetermined upon, the setscrew k is adjusted to limitthe movement of theframe 0, when, by its forward motion, said determined diameter has beenattained. A collar, 1), adjusted by the screw D regulates the depth towhich the former descends into the mold-box to form the thickness of thebottom of the crucible. These two adjustments being made, the clay isplaced in the mold-box, of any suitable construction. Power is nowapplied to the driving-pulleys f f by a belt, which is driven by awide-faced pulley attached to a shaft which is parallel with the lengthof the machine.

The handle h is now elevated, thereby ro-- tating the wheel H in thedirection of the arrow, and moving the frame 0, and with it themold-box, toward the former D until the center of the mold-box is nearlyor quite beneath the center of the said .former, when said movement isdiscontinued and the former is allowed to descend upon the clay in themold-box. The latter, revolving at a high rate of speed, soon sinks saidformer therein, until its further downward movement is arrested by thecollar 1), in which position it fixedly remains until the crucible isfinished. The handle h is now again raised, which causes a further"forward movement of the frame 0 toward the set-screw k, and advancesthe mold-box to the former, and causes the clay therein to press againstthe side of the former, which, by becoming ec centric therewith and therapid revolution of the mold-box thereabout, causes the same to beincreased in diameter, and this increase continues until, by the stillfurther elevation of the handle h, the sliding frame is stopped by thescrew 7., and the thickness and size of the walls of the crucible areattained. is then thrown off and the order of the aforesaid movementsreversed, and the crucible removcdfrom the mold-box and a fresh chargeof clay inserted, when the operation is resumed.

What I claim as my invention is-- I. In a crucible-machine, thecombination of a former having a vertical movement in stationarybearings with a rotating mold-box having a reciprocating motion to andfrom the said former, as set forth.

2. In a crucible-machine, a mold-box revolving around and reciprocatingto and from a former, substantially as set forth.

In combination with a vertically-moving former in fixed bearingsattached to the main frame of the machine, the supplementary slidingframe carrying the revolving mold-box,

substantially as shown and described.

4. The combination of the former l), fixed bearings cl, sliding frame 0,vertical spindle F, and mold-box f frame A, and set-screw 7.,substantially as shown and described.

5. In combination with the frame A, the supplementary sliding frame(3,"the racks 1 and G, and wheel H, substantially as shown anddescribed.

In testimony that I claim the foregoing I have hereunto set my hand this4th day of September, 1878.

JOHN (J. OLIME.

\Vitnesses J. 1%. 1\[ASSEY, FRANK Tl. MAssEY.

The power

